Finding the Fourth Proportional to 113,485.50, 156,609.99 and 63,196.38

Step by Step Solution

1. Step 1: Write the proportion equation
   113,485.50 : 156,609.99 = 63,196.38 : x
2. Step 2: Convert to fraction form
   113,485.50/156,609.99 = 63,196.38/x
3. Step 3: Cross multiply
   113,485.50x = 156,609.99 × 63,196.38
4. Step 4: Simplify right side
   113,485.50x = 9,897,184,439.84
5. Step 5: Solve for x
   x = 9,897,184,439.84/113,485.50
6. Step 6: Final answer
   x = 87,211.00